Just checked, seems that that account went out of Ether as there were too many votes (more than 100). Didn't expect this much traffic haha.

But to basically explain what happened, each poll has a minimum 0.2 Ether which are used for paying the network for executing the smart contract. Since more than 100 people have voted on the system, it means that the account (which holds the Ether) went out of tokens and now nobody can vote anymore.

I'm right now working on fixing this by creating a balancing system that basically creates a faucet. But feel free to create a new poll. You can send me the link here and I'll send some Ether to get you going.